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Two-phase pressure drop of R410A in small consecutive U-type wavy tubes.
Author(s) : CHEN I. Y., HU R., LIN S. Y., et al.
Summary
The influence of return bend on the frictional performance of R410A in two 3.3-mm diameter wavy tubes with curvature ratios of 3.91 and 8.15 is examined in the study. For the single-phase results, three existing correlations of Ito (1960), Popieil and Wojtkowiak (2000) and Chen et al. (2002) give fair agreements with the presented data. The frictional two-phase multiplier in U bend can be fairly predicted by the Awwad et al. correlation (1995) using the Lockhart and Martinelli relationships and the above three friction factor correlations.
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Details
- Original title: Two-phase pressure drop of R410A in small consecutive U-type wavy tubes.
- Record ID : 2005-0099
- Languages: English
- Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
- Publication date: 2003/08/17
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Indexing
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Themes:
Mass transfer;
Two-phase flow;
Blends - Keywords: Two-phase flow; R410A; Geometry; Calculation; Tube; Refrigerant; Heat exchanger; Pressure drop
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